/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2022 iText Group NV
    Authors: iText Software.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License version 3
    as published by the Free Software Foundation with the addition of the
    following permission added to Section 15 as permitted in Section 7(a):
    FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
    ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
    OF THIRD PARTY RIGHTS
    
    This program is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    or FITNESS FOR A PARTICULAR PURPOSE.
    See the GNU Affero General Public License for more details.
    You should have received a copy of the GNU Affero General Public License
    along with this program; if not, see http://www.gnu.org/licenses or write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA, 02110-1301 USA, or download the license from the following URL:
    http://itextpdf.com/terms-of-use/
    
    The interactive user interfaces in modified source and object code versions
    of this program must display Appropriate Legal Notices, as required under
    Section 5 of the GNU Affero General Public License.
    
    In accordance with Section 7(b) of the GNU Affero General Public License,
    a covered work must retain the producer line in every PDF that is created
    or manipulated using iText.
    
    You can be released from the requirements of the license by purchasing
    a commercial license. Buying such a license is mandatory as soon as you
    develop commercial activities involving the iText software without
    disclosing the source code of your own applications.
    These activities include: offering paid services to customers as an ASP,
    serving PDFs on the fly in a web application, shipping iText with a closed
    source product.
    
    For more information, please contact iText Software Corp. at this
    address: sales@itextpdf.com
 */
using System;
using iTextSharp.xmp;
using iTextSharp.xmp.options;

namespace iTextSharp.text.xml.xmp {

    public class DublinCoreProperties {
        /** External Contributors to the resource (other than the authors). */
        public static readonly String CONTRIBUTOR = "contributor";
        /** The extent or scope of the resource. */
        public static readonly String COVERAGE = "coverage";
        /** The authors of the resource (listed in order of precedence, if significant). */
        public static readonly String CREATOR = "creator";
        /** Date(s) that something interesting happened to the resource. */
        public static readonly String DATE = "date";
        /** A textual description of the content of the resource. Multiple values may be present for different languages. */
        public static readonly String DESCRIPTION = "description";
        /** The file format used when saving the resource. Tools and applications should set this property to the save format of the data. It may include appropriate qualifiers. */
        public static readonly String FORMAT = "format";
        /** Unique identifier of the resource. */
        public static readonly String IDENTIFIER = "identifier";
        /** An unordered array specifying the languages used in the	resource. */
        public static readonly String LANGUAGE = "language";
        /** Publishers. */
        public static readonly String PUBLISHER = "publisher";
        /** Relationships to other documents. */
        public static readonly String RELATION = "relation";
        /** Informal rights statement, selected by language. */
        public static readonly String RIGHTS = "rights";
        /** Unique identifier of the work from which this resource was derived. */
        public static readonly String SOURCE = "source";
        /** An unordered array of descriptive phrases or keywords that specify the topic of the content of the resource. */
        public static readonly String SUBJECT = "subject";
        /** The title of the document, or the name given to the resource. Typically, it will be a name by which the resource is formally known. */
        public static readonly String TITLE = "title";
        /** A document type; for example, novel, poem, or working paper. */
        public static readonly String TYPE = "type";

        /**
         * Adds a title.
         *
         * @param xmpMeta
         * @param title
         */

        public static void AddTitle(IXmpMeta xmpMeta, String title) {
            xmpMeta.AppendArrayItem(XmpConst.NS_DC, TITLE, new PropertyOptions(PropertyOptions.ARRAY_ALTERNATE), title,
                                    null);
        }

        /**
         * Sets a title.
         *
         * @param xmpMeta
         * @param title
         * @param genericLang  The name of the generic language
         * @param specificLang The name of the specific language
         */

        public static void SetTitle(IXmpMeta xmpMeta, String title, String genericLang, String specificLang) {
            xmpMeta.SetLocalizedText(XmpConst.NS_DC, TITLE, genericLang, specificLang, title);
        }

        /**
         * Adds a description.
         *
         * @param xmpMeta
         * @param desc
         */

        public static void AddDescription(IXmpMeta xmpMeta, String desc) {
            xmpMeta.AppendArrayItem(XmpConst.NS_DC, DESCRIPTION, new PropertyOptions(PropertyOptions.ARRAY_ALTERNATE),
                                    desc, null);

        }

        /**
         * Sets a description.
         *
         * @param xmpMeta
         * @param desc
         * @param genericLang  The name of the generic language
         * @param specificLang The name of the specific language
         */

        public static void SetDescription(IXmpMeta xmpMeta, String desc, String genericLang, String specificLang) {
            xmpMeta.SetLocalizedText(XmpConst.NS_DC, DESCRIPTION, genericLang, specificLang, desc);
        }

        /**
         * Adds a subject.
         *
         * @param xmpMeta
         * @param subject
         */

        public static void AddSubject(IXmpMeta xmpMeta, String subject) {
            xmpMeta.AppendArrayItem(XmpConst.NS_DC, SUBJECT, new PropertyOptions(PropertyOptions.ARRAY), subject, null);
        }


        /**
         * Sets a subject.
         *
         * @param xmpMeta
         * @param subject array of subjects
         */

        public static void SetSubject(IXmpMeta xmpMeta, String[] subject) {
            XmpUtils.RemoveProperties(xmpMeta, XmpConst.NS_DC, SUBJECT, true, true);
            for (int i = 0; i < subject.Length; i++) {
                xmpMeta.AppendArrayItem(XmpConst.NS_DC, SUBJECT, new PropertyOptions(PropertyOptions.ARRAY), subject[i],
                                        null);
            }
        }

        /**
         * Adds a single author.
         *
         * @param xmpMeta
         * @param author
         */

        public static void AddAuthor(IXmpMeta xmpMeta, String author) {
            xmpMeta.AppendArrayItem(XmpConst.NS_DC, CREATOR, new PropertyOptions(PropertyOptions.ARRAY_ORDERED), author,
                                    null);
        }

        /**
         * Sets an array of authors.
         *
         * @param xmpMeta
         * @param author
         */

        public static void SetAuthor(IXmpMeta xmpMeta, String[] author) {
            XmpUtils.RemoveProperties(xmpMeta, XmpConst.NS_DC, CREATOR, true, true);
            for (int i = 0; i < author.Length; i++) {
                xmpMeta.AppendArrayItem(XmpConst.NS_DC, CREATOR, new PropertyOptions(PropertyOptions.ARRAY_ORDERED),
                                        author[i], null);
            }
        }

        /**
         * Adds a single publisher.
         *
         * @param xmpMeta
         * @param publisher
         */

        public static void AddPublisher(IXmpMeta xmpMeta, String publisher) {
            xmpMeta.AppendArrayItem(XmpConst.NS_DC, PUBLISHER, new PropertyOptions(PropertyOptions.ARRAY_ORDERED),
                                    publisher, null);
        }

        /**
         * Sets an array of publishers.
         *
         * @param xmpMeta
         * @param publisher
         */

        public static void SetPublisher(IXmpMeta xmpMeta, String[] publisher) {
            XmpUtils.RemoveProperties(xmpMeta, XmpConst.NS_DC, PUBLISHER, true, true);
            for (int i = 0; i < publisher.Length; i++) {
                xmpMeta.AppendArrayItem(XmpConst.NS_DC, PUBLISHER, new PropertyOptions(PropertyOptions.ARRAY_ORDERED),
                                        publisher[i], null);
            }
        }
    }
}
